Browse Prior Art Database

Rotating Lift Mechanism

IP.com Disclosure Number: IPCOM000061032D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 75K

Publishing Venue

IBM

Related People

Comulada, R: AUTHOR [+3]

Abstract

This article describes a lift mechanism designed to accurately position a space transformer relative to spring-biased pin contacts on a motherboard, thereby facilitating parts replacement and minimizing downtime due to contact misalignment. A lift mechanism must position a space transformer accurately relative to the motherboard spring-biased pin contacts overhead and the optical axis below, meanwhile maintaining x-y plane alignment. The disclosed rotating lift mechanism fully meets these requirements, permitting like dimensioned space transformers to be exchanged quickly with a minimum of down time experienced due to contact misalignment problems at test. Fig. 1 - 5 identify pertinent features to be discussed about the design and operation of this lift mechanism.

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Rotating Lift Mechanism

This article describes a lift mechanism designed to accurately position a space transformer relative to spring-biased pin contacts on a motherboard, thereby facilitating parts replacement and minimizing downtime due to contact misalignment. A lift mechanism must position a space transformer accurately relative to the motherboard spring-biased pin contacts overhead and the optical axis below, meanwhile maintaining x-y plane alignment. The disclosed rotating lift mechanism fully meets these requirements, permitting like dimensioned space transformers to be exchanged quickly with a minimum of down time experienced due to contact misalignment problems at test. Fig. 1 - 5 identify pertinent features to be discussed about the design and operation of this lift mechanism. A space transformer 1, its conveyor carriage 2, and space transformer guidepins 3 are illustrated in Fig. 1. The transformer guidepins fit into two accurately spaced carriage guide bushings 14, which are better illustrated in Fig. 4. The carriage (with transformer inserted) is loaded and pneumatically guided inward along a set of guide rails 4, as illustrated in Fig. 2, in order to be properly positioned with respect to another set of bushings centered under the spring- biased pin assembly. As identified by Fig. 2, an air cylinder 5 drives the carriage 2 inward to home position. The pin in the cam ring arm 6 at the rear then engages the yoke 7 of the actuating cylinder 5. As shown in Fig. 3, the transformer 1 is then lifted vertically to provide proper...